Go over homework and evaluate teacher’s difficulty
Homework
Section 3
Physics to Go – page171-173
#1, 2, 5, 13
Section 4
Physics to Go – page 182-183
1, 2, 8
Evaluate
4:20-5:10
Chapter 2: Physics in Action
Section 5: The Range of a Projectile
What do you see?
What do you think?
Investigate
Part 1: class determination of acceleration due to gravity
Part 2: washers and strings – group
Physics Talk
Projectiles at different angles
Always a parabola – Proof
Chapter Mini-Challenge
Elicit
Engage
Explore
Explain
Extend
5:10-5:50
Chapter 2: Physics in Action
Section 6: Newton’s 3rd Law: Run and Jump
What do you see?
What do you think?
Investigate
Part 1: class skateboard demonstration
Part 2: class demo – bending meter stick
Part 3 (from Physics Talk) – two spring scales
Physics Talk
Newton’s 3rd Law
Elicit
Engage
Explore
Explain
5:50-6:00
Research Articles
6:00-6:10
Break
6:10-6:40
Chapter 2: Physics in Action
Section 7: Frictional Forces: the mu of the shoe
What do you see?
What do you think?
Investigate
Elicit
Engage
Explore
6:40-7:10
Explain
Definition vs what we measure
Reflecting on the Section and the Challenge
Teams practice videos with Newton’s 3rd Law OR Friction
Explain
Elaborate
Extend
7:10 – 7:25
Arthur
SportsFigures
Extend
7:15-7:25
7:25-7:30
Homework
HW for Section 5:
Essential Questions on p 193
Physics to Go on p 194-195
#2, 5, 10
Mini-Challenge – Work with your group by email and share some of the dialog as evidence of your work on the mini-challenge.
HW for Section 6:
Essential Questions on p 207
Physics to Go on p. 208-209
#2, 5, 8
HW for Section 7:
Essential Questions on p 217
Physics to Go on p 218-219
#1, 2, 9, 11
Evaluate
Another Snow Day. I’m sure we all thought it was all over.
The cancellation of class tonight Tuesday, Mar 19 requires a make-up of the work/time. Recognizing that rescheduling another class will be nearly impossible, I am opting for you to work individually and with your group (all emails are on this email to you) to move through the sections we had scheduled for Tuesday. This will then allow us to remain on schedule for the work for the semester. We will also be able to compare individual/group work with class work as a way to reflect on the value of class time in general.
REMINDER: WE ARE MEETING THIS SATURDAY FROM 8-3 PM.
I am attaching the lesson plan we had developed for the day. Of course, the research article presentations will be pushed to our next meeting. For the rest of the 3.5 hours of class that you will be allocating, here are some suggestions.
You should hand in a copy of your “notebook” showing the answers to the questions in each section’s investigate as evidence you worked on this for the allocated class time.
Section 5: In the Investigate, you will see a technique of how you can measure the acceleration due to gravity using the ticker tape timer. You should follow the procedure without data to better understand how this is done. In Step 2, you will determine the distance that an object will fall after each 0.1 seconds. Rather than hanging balls on strings, you can create a chart to show how far the ball drops while it moves horizontally. This shape is a parabola.
The proof for this uses the equations in the Active Physics Plus. Since the horizontal motion is x=vxt where x is the horizontal distance and vx is the velocity in the x-direction. The vertical motion is y= ½ at2 where y is the vertical distance and a is the acceleration due to gravity (=9.8 m/s2). By solving the x equation for t and substituting in the y-equation, one gets: y= ½ a x2/vx2
This can be rewritten as
y = ( ½ a/vx2)x2. Notice that for every trajectory, a is identical (=9.8 m/s2) and for any one trajectory vx is a constant. That means that the equation can be written as y = kx2 where k is actually a constant (=½ a/vx2). y = kx2 is the equation for a parabola. All thrown objects travel is parabolas.
HW for Section 5:
Essential Questions on p 193
Physics to Go on p 194-195
#2, 5, 10
Mini-Challenge – Work with your group by email and share some of the dialog as evidence of your work on the mini-challenge.
Section 6: You will have to read through the section and consider the investigations as a “thought” experiment. You can probably try Part B with something you can find in your home.
HW for Section 6:
Essential Questions on p 207
Physics to Go on p. 208-209
#2, 5, 8
Section 7: I assume that people don’t have spring scales at home, but you can use a rubber band and it’s stretch to attempt the investigate.
HW for Section 7:
Essential Questions on p 217
Physics to Go on p 218-219
#1, 2, 9, 11
We are expecting that you devote the 3.5 hours of class time to working through Sections 5, 6, 7. The homework and planning for research articles is additional time. Once again, by doing this we will not have to schedule an additional class.
REMINDER: WE ARE MEETING THIS SATURDAY FROM 8-3 PM.
Lesson 7
Date: March 19, 2013
Homework
Section 5: The Range of a Projectile
What do you see?
What do you think?
Investigate
Physics Talk
Chapter Mini-Challenge
Engage
Explore
Explain
Extend
Section 6: Newton’s 3rd Law: Run and Jump
What do you see?
What do you think?
Investigate
Physics Talk
Engage
Explore
Explain
Section 7: Frictional Forces: the mu of the shoe
What do you see?
What do you think?
Investigate
Engage
Explore
Reflecting on the Section and the Challenge
Elaborate
Extend
Arthur
HW for Section 5:
Mini-Challenge – Work with your group by email and share some of the dialog as evidence of your work on the mini-challenge.
HW for Section 6:
HW for Section 7:
The cancellation of class tonight Tuesday, Mar 19 requires a make-up of the work/time. Recognizing that rescheduling another class will be nearly impossible, I am opting for you to work individually and with your group (all emails are on this email to you) to move through the sections we had scheduled for Tuesday. This will then allow us to remain on schedule for the work for the semester. We will also be able to compare individual/group work with class work as a way to reflect on the value of class time in general.
REMINDER: WE ARE MEETING THIS SATURDAY FROM 8-3 PM.
I am attaching the lesson plan we had developed for the day. Of course, the research article presentations will be pushed to our next meeting. For the rest of the 3.5 hours of class that you will be allocating, here are some suggestions.
You should hand in a copy of your “notebook” showing the answers to the questions in each section’s investigate as evidence you worked on this for the allocated class time.
Section 5: In the Investigate, you will see a technique of how you can measure the acceleration due to gravity using the ticker tape timer. You should follow the procedure without data to better understand how this is done. In Step 2, you will determine the distance that an object will fall after each 0.1 seconds. Rather than hanging balls on strings, you can create a chart to show how far the ball drops while it moves horizontally. This shape is a parabola.
The proof for this uses the equations in the Active Physics Plus. Since the horizontal motion is x=vxt where x is the horizontal distance and vx is the velocity in the x-direction. The vertical motion is y= ½ at2 where y is the vertical distance and a is the acceleration due to gravity (=9.8 m/s2). By solving the x equation for t and substituting in the y-equation, one gets: y= ½ a x2/vx2
This can be rewritten as
y = ( ½ a/vx2)x2. Notice that for every trajectory, a is identical (=9.8 m/s2) and for any one trajectory vx is a constant. That means that the equation can be written as y = kx2 where k is actually a constant (=½ a/vx2). y = kx2 is the equation for a parabola. All thrown objects travel is parabolas.
HW for Section 5:
Mini-Challenge – Work with your group by email and share some of the dialog as evidence of your work on the mini-challenge.
Section 6: You will have to read through the section and consider the investigations as a “thought” experiment. You can probably try Part B with something you can find in your home.
HW for Section 6:
Section 7: I assume that people don’t have spring scales at home, but you can use a rubber band and it’s stretch to attempt the investigate.
HW for Section 7:
We are expecting that you devote the 3.5 hours of class time to working through Sections 5, 6, 7. The homework and planning for research articles is additional time. Once again, by doing this we will not have to schedule an additional class.
REMINDER: WE ARE MEETING THIS SATURDAY FROM 8-3 PM.